★★★★★G'day dog (Bluey)v1.03 Mar 2022
What a useful app. I work with pipe up 4" turning various fitting and this program has everything I need without having Mach Handbook next to lathe. Has 2 Classes of fit (A B) plus couplers. Can change dimension from imperial to metric on the fly. Nothing I could recommend to add or change. 👍Thank you.